Martin won the vacant IBF heavyweight title in New York in January by way of TKO when Ukrainian Vyacheslav Glazkov injured his knee after being felled by a punch in the third round.

His reign as champ lasted just three months, when rising British star and Olympic gold medalist Anthony Joshua deposed the American inside two rounds.

At just 85 days, Martin's reign as heavyweight champion is the second-shortest in professional boxing history, with only Tony Tucker's tenure in 1987 being shorter.

Other notable boxers involved in shooting incidents include Hall of Fame fighter Hector Camacho, was killed in Puerto Rico in 2012, while cruiserweight champion O’Neil Bell was killed in a gun robbery in Atlanta, Georgia, in November 2015.